Microflown, a New Particle Velocity Sensor, The

Sound and Vibration, Feb 2005 by de Bree, Hans-Elias

Vibration/Sound Radiation Sensor. Structural vibration in the very nearfield, can be measured with the Microflown.4 If the sound pressure is also measured then the sound intensity can be determined. In a single measurement one can determine whether an object vibrates and whether the vibration is causing sound waves that propagate.

1. www. microfiown.com

2. de Bree, H-E., et al, Patent PCT/NL95/00220, "Use of a Fluid Flow Measuring Device as a Microphone and System Comprising Such a Microphone," 1995.

3. de Bree, H-E., et al, The Microflown; A Novel Device Measuring Acoustical Flows, Sensors and Actuators: A, Physical, volume SNA054/1-3, pp 552-557, 1996.

4. do Bree, H-E., et al, "The Very Nearfield - Theory, Simulations and Measurements of Sound Pressure and Particle Velocity in the Very Nearfield," ICSV11, St. Petersburg, 2004.

5. Jacobsen, F., et al, "A Comparison of Two Different Sound Intensity Measurement Principles," submitted to the Journal of the Acoustical of America, November 2004.

6. Rondeau, J-F., et al, "Vehicle Acoustic Synthesis Method: Improving Acquisition Time by Using P-U Microflown Probes," submitted to the SAE, 2005.

7. Druyvesteyn, W. F., et al, "A New Sound Intensity Probe - Comparison to the Brüel & Kjær P-P Probe," J. Audio Eng. Soc., Vol. 48, 2000, No. 1/2 January/February.

8. Lanoye, R., et al, "A Practical Device to Determine the Reflection Coefficient of Acoustical Materials In Situ Based on a Microflown and Microphone Sensor," ISMA, 2004.

Hans-Elias de Bree, Microflown Technologies, Zevenaar, Netherlands

The author can be contacted at: clebree@microflown.com.